/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.spark.sql.api.r

import org.apache.spark.sql.test.SharedSparkSession

class SQLUtilsSuite extends SharedSparkSession {

  import testImplicits._

  test("dfToCols should collect and transpose a data frame") {
    val df = Seq(
      (1, 2, 3),
      (4, 5, 6)
    ).toDF
    assert(SQLUtils.dfToCols(df) === Array(
      Array(1, 4),
      Array(2, 5),
      Array(3, 6)
    ))
  }

}
